Five-carbon furanose sugars in which the OXYGEN is replaced by a NITROGEN atom.

Synonyms: 0, Hydroxy-Methyl-Pyrrolidines, Imino Furanoses, Hydroxymethylpyrrolidines, 1,4 Imino Sugars, Sugars, 1,4-Imino, 1,4-Imino Sugars, Furanoses, Imino, Hydroxy Methyl Pyrrolidines